/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Original Code is iSQL-Viewer, A Mutli-Platform Database Tool.
 *
 * The Initial Developer of the Original Code is iSQL-Viewer, A Mutli-Platform Database Tool.
 * Portions created by Mark A. Kobold are Copyright (C) 2000-2007. All Rights Reserved.
 *
 * Contributor(s): 
 *  Mark A. Kobold [mkobold <at> isqlviewer <dot> com].
 *  
 * If you didn't download this code from the following link, you should check
 * if you aren't using an obsolete version: http://www.isqlviewer.com
 */
package org.isqlviewer.util;

import java.io.OutputStream;

import org.apache.log4j.Logger;

/**
 * OutputStream wrapper for provider streams and writers for logging purposes.
 * <p>
 * 
 * @author Mark A. Kobold &lt;mkobold at isqlviewer dot com&gt;
 * @version 1.0
 */
public class Log4jOutputStream extends OutputStream {

    private StringBuffer buf = new StringBuffer("");
    private final Logger logger;

    public Log4jOutputStream(Logger logger) {

        this.logger = logger;

    }

    @Override
    public synchronized void write(int b) {

        buf.append(Character.toString((char) b));
    }

    @Override
    public synchronized void write(byte[] b, int offset, int length) {

        buf.append(new String(b, offset, length));

    }

    @Override
    public synchronized void write(byte[] b) {

        buf.append(new String(b));
    }

    @Override
    public synchronized void flush() {

        synchronized (buf) {
            if (buf.length() > 0) {
                char last = buf.charAt(buf.length() - 1);
                if (last == '\n' || last == '\r') {
                    String text = buf.toString().trim();
                    logger.info(text);
                    buf.setLength(0);
                }
            }
        }
    }
}